1. Performing fellatio by relaxing the back of the throat to avoid the gag reflex, resulting in deeper penetration of the penis.
2. Title of an XXX movie starring Linda Lovelace which centered on this method of performing fellatio.
3. Name given to an informant, believed to be high in government circles, who helped WASHINGTON POST reporters Bob Woodward and Carl Bernstein in their investigation of the famous Watergate case which ultimately resulted in the resignation of Richard Nixon as President of the United States.

"When she performed deep throat on me, it made me forget all other blowjobs."

"I haven't been able to watch 'Deep Throat' since I found out that Linda Lovelace was performing under the threat of a gun by her so-called boyfriend."

"Carl and Bob promised not to release their informant's identity, so they called him Deep Throat."

1) to perform fellatio (dick-sucking) to where the penis is sticking in the performer's throat (usually causing a gag reflex);
2) title of a movie that referred to the act of deep throating;
3) name given to an informant figure who spoke to Woodward and Bernstein during the Washington Post's investigation of the Watergate break-in. His identity has essentially been kept a secret and has been the focus of a parlor guessing game in DC.
Some believe Deep Throat was either fake, a literary creation to sell the book 'All the President's Men,' but too much surrounding evidence does suggest there was at least one deep source providing clues. The more likely scenario is that Deep Throat is indeed a merging of a handful of sources (despite Woodward's assertions it's only one person) in order to both protect their identities as well as create a mesmerizing character in the book written about the investigation.
If Deep Throat is indeed one person, the most likely suspects are with the FBI, who were being pressured by the CIA (acting on Nixon's orders, according to his own tape recordings) to cover up the whole mess, and who were fighting back as best they could against a White House that was threatening their relative independence within the government (during Hoover's lifetime, the FBI became a separate power unto itself, and with Hoover's death at the time of the break-in, that was being threatened).

1) Deep throating has got to hurt. Especially if she bites down.
2) Deep Throat was a top person with the FBI, a guy named M. Felt. His initials are MF, the same as the 'My Friend' that Woodward tried calling his source at the beginning of the investigation. Nice clue, ya?

One of the most overrated sex acts ever, where a partner giving oral sex takes the penis deep into his/her throat. Many men claim that this feels better "because of the narrowness of the throat opening", "because of the massaging action of the throat gagging", etc. In all honesty, the best way to give oral sex is to use the lips and tongue on the head, and any guy who denies this watches too much porn. A particularly baffling practice in porn is where the guy forces his dick back into the back of his partner's throat and holds it there, then begins to moan as if holding his dick motionless there somehow is pleasurable. Deepthroating is popular in porn for the same reason facial cumshots are: for the psychological arousal of dominance/degradation. Not that there's anything wrong with dominance play between partners that care about each other, but we shouldn't kid ourselves by pretending there's some physical motivation behind this act. Cum can be washed off a partner's face, but making a partner vomit, bruising their throat, is that really worth it just for what really is a fetish? Its particularly disturbing that some girls, believing the myth that it provides physical pleasure, would practice suppressing their gag reflex (the body's healthy reflex designed to prevent chocking) or would even use throat pain killers suppressing their body's natural way of saying "don't do that"

Joe: Hey man I just deepthroat for the first time last night

Mike: how was it??

Joe: Ehn, I don't see what all the hype was about. She almost puked on my dick too

to deepthroat is to take a guys dick (depending on its size, cuz even while deepthroatin some guys dont make it to the back of ur throat) and shove it all the way into the back of your throat-but only expirienced girls should try this because it can make you gag or even throw up.